A harbour is a sheltered body of water where ships, boats, and other vessels can dock, load, and unload cargo or passengers. Harbours provide protection from rough seas and are often equipped with facilities such as piers, wharves, and storage areas. They play a crucial role in maritime trade and transportation. Harbours can be natural or artificial. Natural harbours are formed by geographical features like bays or inlets, while artificial harbours are constructed by humans to enhance safety and accessibility. Major cities often develop around harbours, contributing to economic growth and cultural exchange, as seen in places like New York City and Sydney.